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Finding the Fourth Proportional to 91,752, 126,619.68 and 52,008

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Solution

The fourth proportional to 91,752, 126,619.68 and 52,008 is: 71,772.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,752 : 126,619.68 = 52,008 : x
  2. Step 2: Convert to fraction form
    91,752/126,619.68 = 52,008/x
  3. Step 3: Cross multiply
    91,752x = 126,619.68 × 52,008
  4. Step 4: Simplify right side
    91,752x = 6,585,236,317.44
  5. Step 5: Solve for x
    x = 6,585,236,317.44/91,752
  6. Step 6: Final answer
    x = 71,772.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.